.body {
  width: 100%;
  height: auto;
  float: left;
  box-sizing: border-box;
  padding-bottom: 53px;
  text-align: left;
}

.tabs {
  width: 100%;
  height: 55px;
  float: left;
  position: sticky;
  top: 0;
  box-sizing: border-box;
  padding-top: 10px;
  z-index: 999;
  background: rgb(255, 255, 255);
  box-shadow: 0px 2px 4px 0px rgba(204, 204, 204, 0.2);
  display: flex;
  flex-direction: row;
  position: relative;
  justify-content: space-between;
  padding: 20px 30px;
}

.tabs > .item-tab {
  display: inline-block;
  width: auto;
  height: 15px;
  font-size: 15px;
  font-weight: 400;
  color: #333333;
  line-height: 15px;
  cursor: pointer;
  position: relative;
}

.tabs > .item-tab.active {
  font-weight: 600;
  color: #3ca7fa;
}

.tabs > .item-tab > .actline {
  width: 20px;
  height: 3px;
  background: #3ca7fa;
  border-radius: 3px;
  position: absolute;
  left: 5px;
  top: 25px;
}

.coursr-desc,
.course-chapter-box,
.course-comments-box {
  width: 100%;
  height: auto;
  float: left;
  color: #333333;
  line-height: 21px;
  box-sizing: border-box;
  padding: 20px 15px 15px 15px;
}

.coursr-desc > .desc {
  width: 100%;
  height: auto;
  float: left;
}

.coursr-desc > .desc > p {
  width: 100%;
  height: auto;
  float: left;
  overflow: hidden;
}

.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 11;
  width: 100%;
  height: 53px;
  float: left;
  background-color: white;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  display: flex;
  box-sizing: border-box;
  padding-left: 15px;
  padding-right: 15px;
}

.collect-button {
  width: 25px;
  height: auto;
  margin-right: 15px;
}

.collect-button > .icon {
  width: 100%;
  height: 25px;
  box-sizing: border-box;
  padding-top: 5px;
  text-align: center;
  margin-bottom: 1px;
}

.collect-button > .icon > .like-icon {
  display: inline-block;
}

.collect-button > .text {
  width: 100%;
  height: 25px;
  float: left;
  line-height: 25px;
  font-size: 10px;
  font-weight: 400;
  color: #666666;
  text-align: center;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.collect-button.active > .icon {
  color: #ffc219;
}

.button-item {
  flex: 1;
  display: block;
  text-align: center;
  margin: 4px 0px;
  line-height: 40px;
  font-size: 15px;
  font-weight: 500;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

.buy-button {
  border-radius: 0px 4px 4px 0px;
  background-color: #ff5068;
  color: white;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.see-button {
  border-radius: 3px;
  background-color: #3ca7fa;
  color: white;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.role-button2 {
  border-radius: 3px;
  background-color: #e2a500;
  color: white;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.role-button {
  border-radius: 3px 0px 0px 3px;
  background-color: #e2a500;
  color: white;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.bottom-bar > .input {
  flex: 1;
  padding-top: 0px;
}

.bottom-bar > .input > input {
  width: 100%;
  height: 22px;
  font-size: 14px;
  font-weight: 400;
  color: #333333;
  line-height: 22px;
  box-sizing: border-box;
  border: none;
}

.bottom-bar > .input > input:focus {
  outline: none;
}

.comment-button {
  width: auto;
  height: 33px;
  font-size: 14px;
  font-weight: 400;
  color: #666;
  line-height: 33px;
  -ms-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  padding-left: 15px;
  padding-top: 10px;
}

.comment-button.active {
  color: #1784ed;
}

.course-comments-box > .comment-item {
  width: 100%;
  height: auto;
  float: left;
  margin-top: 0px;
  margin-bottom: 30px;
  display: flex;
  text-align: left;
}

.course-comments-box > .comment-item > .avatar {
  width: 30px;
  height: 30px;
  margin-right: 10px;
}

.course-comments-box > .comment-item > .avatar > img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.course-comments-box > .comment-item > .content {
  flex: 1;
  position: relative;
}

.course-comments-box > .comment-item > .content > .nickname {
  width: 100%;
  height: auto;
  float: left;
  font-size: 12px;
  box-sizing: border-box;
  color: #999999;
  margin-top: 5px;
  margin-bottom: 13px;
}

.course-comments-box > .comment-item > .content > .time {
  position: absolute;
  font-size: 10px;
  color: #999999;
  right: 15px;
  top: 6px;
}

.course-comments-box > .comment-item > .content > .text {
  width: 100%;
  height: auto;
  float: left;
  font-size: 14px;
  line-height: 1.2;
  color: #333;
}

.course-comments-box > .comment-item > .content > .text-sp {
  width: 76px;
  height: 16px;
  background-color: rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  border-radius: 2px;
  font-weight: 400;
  color: #333333;
}

.course-chapter-box {
  padding: 10px 15px 15px 15px;
}

.course-chapter-box > .chapter-item {
  width: 100%;
  height: auto;
  float: left;
}

.chapter-name {
  width: 100%;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  color: #333333;
  font-weight: bold;
  margin-bottom: 20px;
  margin-top: 10px;
}

.chapter-name > .normaltran {
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
  -o-transform: rotate(180deg);
  -ms-transform: rotate(180deg);
  transform: rotate(180deg);
}

.chapter-name > .trans {
  -webkit-transform: rotate(270deg);
  -moz-transform: rotate(270deg);
  -o-transform: rotate(270deg);
  -ms-transform: rotate(270deg);
  transform: rotate(270deg);
}

.chapter-videos-box {
  display: block;
  width: 100%;
  height: auto;
  float: left;
}

.video-item {
  width: 100%;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  line-height: 36px;
  box-sizing: border-box;
  padding: 0 10px 0 10px;
  background: #f6f6f6;
  border-radius: 4px;
  text-align: left;
}

.video-item > .video-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 14px;
  color: #333;
}

.video-item > .video-title > .free {
  padding: 2px 4px;
  background-color: #04c877;
  border-radius: 2px;
  color: white;
  font-size: 12px;
  margin-right: 10px;
}

.video-item > .video-duration {
  width: auto;
  height: auto;
  font-size: 12px;
  margin-left: 10px;
  color: #999999;
}
